What is the ideal temperature for yeast growth?
People have long taken advantage of the natural fermentation process of yeasts to produce foods, including alcohol and risen bread. (Ancient cultures’ use of fermentation is one of the earliest uses of biotechnology, which applies living organisms for human use.) Bakers commonly use the Saccharomyces cerevisiae yeast to produce carbon dioxide, which causes bread to rise. In this experiment you will examine in which conditions yeasts best live and grow. Yeasts kept in the most suitable living conditions will be the most active; those kept in less suitable conditions will not be as active. You will pour equal amounts of yeast into similar bottles and provide the yeast with water and a food source, sugar. Each bottle of yeast will be given a different…
